EP1131687B1 - Flow limiter - Google Patents

Flow limiter Download PDF

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Publication number
EP1131687B1
EP1131687B1 EP99957324A EP99957324A EP1131687B1 EP 1131687 B1 EP1131687 B1 EP 1131687B1 EP 99957324 A EP99957324 A EP 99957324A EP 99957324 A EP99957324 A EP 99957324A EP 1131687 B1 EP1131687 B1 EP 1131687B1
Authority
EP
European Patent Office
Prior art keywords
gap
closing
flow
base part
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99957324A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1131687A1 (en
Inventor
Cornelis Maria Kipping
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1131687A1 publication Critical patent/EP1131687A1/en
Application granted granted Critical
Publication of EP1131687B1 publication Critical patent/EP1131687B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/08—Jet regulators or jet guides, e.g. anti-splash devices
    • E03C1/084—Jet regulators with aerating means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0106—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
    • G05D7/012—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule the sensing element being deformable and acting as a valve

Definitions

  • the invention relates to a device for arranging in a liquid conduit for limiting a liquid flow in this conduit, according to the preamble of claim 1.
  • a device for arranging in a liquid conduit for limiting a liquid flow in this conduit is known from US-A-3523559.
  • a similar device is known from FR-A-1217791.
  • Good-quality drinking-water can be obtained by treating water obtained by means of surface abstraction (rivers and lakes) and depth abstraction (groundwater).
  • rivers and lakes surface abstraction
  • groundwater depth abstraction
  • the water When the water has been purified to good-quality drinking-water, it must then be transported to the customer. This transport is very expensive because of the very finely branched supply system.
  • Groundwater abstraction has the further drawback that the groundwater level falls through the abstraction of the water, and this can have adverse consequences for the environment.
  • Saving good-quality drinking-water is a good idea in order to prevent, among other things, a fall in the groundwater level and to reduce the consumption of energy for transport, purification and heating.
  • Water utility companies attempt to reduce the consumption of good-quality drinking-water in three ways. First of all, efforts are made to make the mains system as watertight as possible. Secondly, water-saving equipment is used and rainwater can for instance be used to do the washing, for the toilet and to water the garden. Thirdly, taps which are not used specifically for drawing a quantity of water, such as the tap of a wash-basin, are provided with a device as stated in the preamble. With such a device as according to the preamble the flow rate of such taps is limited to about 7-8 litres per minute.
  • NL-A-1001810 describes a flow limiter which comprises a hat-shaped part, wherein two slots are arranged in the upper side of the part. These slots bound a flexible bridge part which bends under the influence of the pressure difference over the hat-shaped part such that the slots are made smaller.
  • This device has the drawback that due to the small dimensions of the gaps the operation of the device is adversely affected by small variations, for instance due to swelling of the material.
  • This device has the further drawback that during limiting of warm or hot liquid flows the device deforms, whereby the operation is adversely affected. Because of the geometry of the bridge part it is moreover not possible to manufacture the device at a reasonable cost. In addition, it is extremely difficult to find a combination of material properties and shape and dimensions wherein the device functions over the whole operating range.
  • the above stated objectives are achieved with a device according to the invention as characterized in claim 1.
  • the choking action of the device will hereby proceed in two stages.
  • the first stage can thus be adapted to the requirements for a constant flow rate at a low pressure.
  • the second stage can then be adapted to the requirements for a constant flow rate at high pressure.
  • an advantage of a device according to the invention is that the closing part closes off the through-flow opening as far as necessary and the size of the gap depends on the liquid pressure difference.
  • the relation between the closing part and the liquid pressure difference results in practically the same outflow being obtained irrespective of the supply pressure of the liquid.
  • the base part comprises an annular flange part and a standing wall along the inner periphery of the annular flange part, and the closing part is arranged on the end of the wall remote from the annular flange part.
  • This embodiment can be readily incorporated into a conduit and because the base part comprises an annular flange part the liquid can flow easily through the gap without the liquid encountering resistance from the base part.
  • the gap is wedge-shaped. This embodiment of the gap results in a very preferred limiting characteristic.
  • the gap comprises a constriction on both ends.
  • a practically constant flow rate is hereby obtained over the whole operating range of the device.
  • the flexible part comprises a plate part and at least one spring element connecting the plate part to the base part.
  • the flow-limiting characteristic is hereby determined wholly by the spring element.
  • the preferred limiting characteristic is obtained by a suitable choice of the spring characteristic of the spring element.
  • the spring element is preferably helical.
  • the device is monolithic.
  • the device is herein preferably manufactured by injection moulding, whereby the cost can be kept low.
  • the closing surface comprises a protrusion for preventing complete closure of the gap. This prevents the device closing the conduit completely if the liquid pressure rises too high.
  • the device comprises an opening for ensuring a minimal flow. This likewise prevents the gap from being completely closed by the closing part in the case of too high a liquid pressure.
  • the gap opening extends in radial direction.
  • Figure 1 shows a perspective view of a tap in which a device according to the invention is applied.
  • Figure 2 shows a cross-section of the outlet opening of the tap shown in figure 1.
  • Figures 3-7 show embodiments of a device for limiting a liquid flow.
  • Figure 8 shows an embodiment of a device according to the invention.
  • Figure 1 shows a tap 1 comprising a housing 2 with an operating handle 3. On the underside of housing 2 is arranged an outlet opening 4, in which outlet opening 4 is arranged a screw-in part 5.
  • FIG. 2 shows a cross-section of outlet opening 4 and screw-in part 5.
  • This latter consists of a bush 6 provided with screw thread and a filter device 7 as known from the prior art.
  • a device 8 for limiting the liquid flow is further arranged on the filter device 7 in bush 6.
  • This device 8 according to the invention comprises an annular flange part 9, a standing wall 10 along the inner periphery of the annular flange part and a flexible closing part 11 arranged on the standing wall. Closing part 11 and standing wall 10 are arranged relative to each other such that in the rest position the gap 12 is formed between the closing part and the standing wall.
  • the part of standing wall 10 adjoining gap 12 forms the closing surface 13.
  • Figure 3 shows a perspective view of the device 8 as applied in the tap 1 of figures 1 and 2.
  • Figure 4 shows a second embodiment.
  • the gap 14 is wedge-shaped and, in order to prevent complete closure of the gap, a protrusion 15 is arranged on closing surface 13 which ensures a minimum flow of water.
  • Figure 5 shows a perspective view of a third embodiment.
  • the gap 14 is likewise wedge-shaped but in order to ensures a minimum flow
  • two holes 16 are arranged on the outer ends of gap 14. These holes are not closed by bending of closing part 11, whereby a minimum flow remains ensured.
  • Figure 6 shows a fourth embodiment, wherein device 8 comprises an annular flange part 9 and a standing wall 10. On standing wall 10 are arranged helical spring elements 17 which support a plate part 18. A uniform closure of the gap is obtained with these spring elements 17. A practically constant flow can hereby be obtained irrespective of the pressure difference over the device.
  • Figure 7 shows a fifth embodiment. This embodiment largely corresponds with the embodiment of figure 3. Gap 14 however comprises constrictions 19 at both ends, whereby the start of the flow characteristic is influenced such that a constant flow is obtained even in the case of a small pressure difference over the device.
  • Figure 8 shows an embodiment of the invention. This embodiment also corresponds by and large with the embodiment of figure 3.
  • the gap has a stepwise progression, however.
  • a gap consisting of a first gap part 21 and a second gap part 22 is therefore arranged in cylindrical part 20.
  • First gap part 21 is narrower than second gap part 22.
  • Closing part 23 will herein bend along the whole length of first gap part 21 and second gap part 22 during the first stage of pressure increase.
  • closing part 23 will contact edge 24, this at the location where first gap part 21 transposes into second gap part 22. If the pressure is now increased further, only the part of closing part 23 located above second gap part 22 will then bend. It is thus possible to cause the degree of closure of the gap to be adjusted in controlled manner.
  • a constant flow rate is hereby obtained over a wide pressure range.
  • the maximum supply pressure may differ from place to place.
  • a flow limiter would have to be designed for each supply pressure. It is however also possible to place a sleeve round the standing wall of the device, whereby the supply of water towards the gap is limited. At a high supply pressure this pressure can thus be reduced, whereby a flow limiter suitable for lower pressures can still be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Safety Valves (AREA)
  • Pipe Accessories (AREA)
  • Valve Device For Special Equipments (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Flow Control (AREA)
  • Domestic Plumbing Installations (AREA)
  • Electrotherapy Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Paper (AREA)
  • Fluid-Driven Valves (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Surgical Instruments (AREA)
  • Glass Compositions (AREA)
  • Pipeline Systems (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP99957324A 1998-11-19 1999-11-12 Flow limiter Expired - Lifetime EP1131687B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1010592A NL1010592C2 (nl) 1998-11-19 1998-11-19 Doorstroombegrenzer.
NL1010592 1998-11-19
PCT/EP1999/009032 WO2000031601A1 (en) 1998-11-19 1999-11-12 Flow limiter

Publications (2)

Publication Number Publication Date
EP1131687A1 EP1131687A1 (en) 2001-09-12
EP1131687B1 true EP1131687B1 (en) 2003-06-04

Family

ID=19768166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957324A Expired - Lifetime EP1131687B1 (en) 1998-11-19 1999-11-12 Flow limiter

Country Status (17)

Country Link
US (1) US6631737B1 (pt)
EP (1) EP1131687B1 (pt)
JP (1) JP3528961B2 (pt)
AT (1) ATE242500T1 (pt)
AU (1) AU1506900A (pt)
BR (1) BR9915472B1 (pt)
CA (1) CA2349607C (pt)
DE (1) DE69908635T2 (pt)
DK (1) DK1131687T3 (pt)
ES (1) ES2201804T3 (pt)
IL (1) IL143187A0 (pt)
NL (1) NL1010592C2 (pt)
NO (1) NO320342B1 (pt)
PL (1) PL193304B1 (pt)
PT (1) PT1131687E (pt)
TR (1) TR200101387T2 (pt)
WO (1) WO2000031601A1 (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2396902A (en) * 2003-01-03 2004-07-07 Jonathan Laker Fluid control device
CN1942635B (zh) 2004-02-06 2010-12-15 Jvl工程有限公司 节水装置
EP1841994A4 (en) * 2005-01-25 2012-11-14 Aerocrine Ab CONSTANT RATE CONTROLLING DEVICE
DE102005010550B4 (de) * 2005-03-04 2007-03-22 Neoperl Gmbh Sanitärer Wasserauslauf
NO326787B1 (no) * 2007-05-16 2009-02-16 Univ I Stavanger Konstantstrømventilsammenbygning
US9328491B2 (en) * 2010-03-31 2016-05-03 Toto Ltd. Water spouting device
NL2011765C2 (nl) 2013-11-08 2015-05-19 Vitaplus Nederland B V Inrichting en werkwijze voor het begrenzen van de hoeveelheid fluïdum.
US9572555B1 (en) * 2015-09-24 2017-02-21 Ethicon, Inc. Spray or drip tips having multiple outlet channels
CN106567949A (zh) * 2015-10-12 2017-04-19 海南广天恒科技发展有限公司 燃气阀专用限流装置
NL2016939B1 (en) 2016-06-10 2018-01-25 Vitaplus Nederland B V Coupling device for coupling and decoupling a flow regulating device from a water piping system
CN107044554A (zh) * 2016-07-24 2017-08-15 海南广天恒科技发展有限公司 过流自动调节装置
PL233931B1 (pl) * 2017-12-11 2019-12-31 Instytut Nafty I Gazu Panstwowy Instytut Badawczy Symulator przepływu cieczy wiertniczych
NL2023494B1 (en) 2019-07-12 2021-02-04 Hagepe Int B V Device for limiting or keeping constant a flowing quantity of liquid
NL2023492B1 (en) 2019-07-12 2021-02-04 Hagepe Int B V Pressure valve for a liquid
EP4350464A1 (en) 2022-10-04 2024-04-10 Cenergist Limited Flow regulating device for regulating a fluid flow therethrough
WO2024074479A1 (en) 2022-10-04 2024-04-11 Cenergist Limited Flow regulating device for regulating a fluid flow therethrough
EP4413851A1 (en) 2023-02-13 2024-08-14 Cenergist Limited Flow regulating device and method of irrigating an area

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899981A (en) * 1959-08-18 Certificate of correction
US904246A (en) * 1908-04-18 1908-11-17 Frank E Buddington Gas-burner.
US2744738A (en) * 1953-01-27 1956-05-08 Crane Co Aerator device
US2840112A (en) * 1954-11-04 1958-06-24 Yarnall Waring Co Check return fitting
FR1217791A (fr) * 1958-12-08 1960-05-05 Cie De Pont A Mousson Régulateur de débit
US3131716A (en) * 1961-03-16 1964-05-05 Griswold Controls Flow control valves
US3267918A (en) * 1964-08-03 1966-08-23 Eaton Mfg Co Fluid metering valve structure
US3523559A (en) * 1968-05-17 1970-08-11 Crane Co Fluid flow control device
US3635405A (en) * 1970-11-05 1972-01-18 Sidney J Shames Aerator construction
DE2425069A1 (de) * 1974-05-24 1975-12-04 Agfa Gevaert Ag Vorrichtung zur konstanthaltung einer durchfliessenden fluessigkeitsmenge
US4294289A (en) * 1980-01-24 1981-10-13 American Standard Inc. Flow control device
IL78235A (en) * 1986-03-23 1990-12-23 Rosenberg Peretz Flow regulator and water sprinkler including same
AT396697B (de) * 1991-03-14 1993-11-25 Ideal Standard Durchflussdrossel
NL1001810C1 (nl) 1995-12-04 1997-06-06 Theodorus Jahannus Gerardus Li Voorziening ter beperking van een vloeistofstroom.

Also Published As

Publication number Publication date
IL143187A0 (en) 2002-04-21
ES2201804T3 (es) 2004-03-16
BR9915472B1 (pt) 2012-12-26
NO20012455L (no) 2001-05-18
CA2349607C (en) 2008-01-08
JP2002530769A (ja) 2002-09-17
NL1010592C2 (nl) 1999-10-01
NO320342B1 (no) 2005-11-21
EP1131687A1 (en) 2001-09-12
US6631737B1 (en) 2003-10-14
NL1010592A1 (nl) 1999-08-18
CA2349607A1 (en) 2000-06-02
DE69908635D1 (de) 2003-07-10
BR9915472A (pt) 2001-11-13
PL347722A1 (en) 2002-04-22
WO2000031601A1 (en) 2000-06-02
JP3528961B2 (ja) 2004-05-24
ATE242500T1 (de) 2003-06-15
DK1131687T3 (da) 2003-09-29
AU1506900A (en) 2000-06-13
PL193304B1 (pl) 2007-01-31
TR200101387T2 (tr) 2001-10-22
PT1131687E (pt) 2003-10-31
DE69908635T2 (de) 2004-05-13
NO20012455D0 (no) 2001-05-18

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